Class: Synvert::Core::Rewriter::WithinScope

Inherits:
Scope
  • Object
show all
Defined in:
lib/synvert/core/rewriter/scope/within_scope.rb

Overview

WithinScope finds out nodes which match rules, then changes its scope to matching node.

Instance Method Summary collapse

Constructor Details

#initialize(instance, rules, options = {}) { ... } ⇒ WithinScope

Initialize a WithinScope.

Parameters:

Yields:

  • run on all matching nodes



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# File 'lib/synvert/core/rewriter/scope/within_scope.rb', line 12

def initialize(instance, rules, options = {}, &block)
  super(instance, &block)
  @rules = rules
  @options = options
end

Instance Method Details

#process ⇒ Object

Find out the matching nodes. It checks the current node and iterates all child nodes, then run the block code on each matching node.



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# File 'lib/synvert/core/rewriter/scope/within_scope.rb', line 21

def process
  current_node = @instance.current_node
  return unless current_node

  matching_nodes =
    if @options[:direct]
      find_direct_matching_nodes(current_node)
    elsif @options[:stop_when_match]
      find_matching_nodes(current_node)
    else
      find_recursive_matching_nodes(current_node)
    end
  @instance.process_with_node current_node do
    matching_nodes.each do |matching_node|
      @instance.process_with_node matching_node do
        @instance.instance_eval(&@block)
      end
    end
  end
end